GlobalBaseSel: This is used to select GBASVAL function for reference of base
values.
SeqTypeUPol: This is used to select the type of voltage polarising quantity i.e. Zero
seq and Neg seq for direction detection.
SeqTypeIPol: This is used to select the type of current polarising quantity i.e. Zero seq
and Neg seq for direction detection.
SeqTypeIDir: This is used to select the type of operating current quantity i.e. Zero seq
and Neg seq for direction detection.
9.4.3.1 Common settings for all steps
AngleRCA: Relay characteristic angle given in degree. This angle is defined as shown
in Figure
180. The angle is defined positive when the residual current lags the
reference voltage (Upol = 3U
0
or U
2
)
Upol = -3U
0
or
IN>Dir
RCA
Operation
-3U
2
IEC05000135-5-en.vsdx
IEC05000135 V5 EN
Figure 180: Relay characteristic angle given in degree
In a normal transmission network a normal value of RCA is about 65°. The setting
range is -180° to +180°.
polMethod: Defines if the directional polarization is from
1MRK 502 071-UEN - Section 9
Current protection
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062 341
Application manual
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